As has probably been mentioned before, I drive that particular 600-ton Subaru. I dug up the paper (well, a preprint of it, anyway) which is all pretty far over my head. A lot of their data was taken before I started working there, but one of the latter nights, I was their night operator, and in theory helping out with the instrument, too. (I was pretty new to the instrument back then, but have since taken over maintaining the operations manual for it.)

It's probably a good thing that I understand very little Japanese - the idea that somebody's going to do 3-D of something at that distance feels every bit as unintuitive to me as it does to jfarkinB, and if I knew what they were talking about, I'd probably have tried to evacuate them from the mountain out of fear that they were delirious from altitude and hypoxia.